COUNTERWEIGHT AR 2720382 - Caterpillar

Illustration 5 g03365812
Electric Control Inputs for "Atch Valve #3 Ext Press" and "Atch Valve #3 Ret Press"
(LJ) Left-hand joystick
(RJ) Right-hand joystick
(C) Thumb wheel (Forward) - "Atch Valve #3 Ext Press"
(D) Thumb wheel (Backward) - "Atch Valve #3 Ret Press"
Select a work tool that will allow for two-way flow from two pumps. Refer to Testing and Adjusting, "Work Tool - Select" for the Tool Control System.Monitor Procedure
The following procedure will allow the user to calibrate the proportional reducing valves using the monitor.
Enter "Service" from "Setting" menu. Input the password "9992".
Illustration 6 g06217675
Select "Calibrations" from the "Service" menu.
Illustration 7 g06218948
Select "Attachment Valves" from the "Calibrations" menu.
Illustration 8 g06218949
Select the attachment valve to calibrate.
Press the OK key in order to start the calibration. The engine RPM will automatically increase to the equivalence of engine speed dial 7.
Confirm the notes on the monitor display. Set up the test conditions in accordance with the instructions. Press the OK key.
Press and hold the control input for activation of the work tool to the FULL ON position during the low pressure calibration.Note: Use the arrows to scroll down to view the machine "Engine Speed" and "Hydraulic Oil Temperature".
Use the arrows to adjust the pressure until the pressure reading is at 500 50 kPa (73 7 psi). Press the device for activation 3 times and release the device for activation 3 times for each adjustment.
Press the OK key when the pressure reading holds steady at 500 50 kPa (73 7 psi) and no more adjustment is required.
Press and hold the control input for activation of the work tool to the FULL ON position during the high pressure calibration.Note: Use the arrows to scroll down to view the machine "Engine Speed" and "Hydraulic Oil Temperature".
Use the arrows to adjust the pressure until the pressure reading is at 2500 50 kPa (363 7 psi). Press the device for activation 3 times and release the device for activation 3 times for each adjustment.
Press the OK key when the pressure reading holds steady at 2500 50 kPa (363 7 psi) and no more adjustment is required.
If calibration was successful and no errors occurred, the display will indicate that the calibration is complete.
The "Error" screen will be displayed on the monitor if an error occurs. The process of calibration will not be saved and the process must be restarted.Cat Electronic Technician Procedure
The following procedure will allow the user to calibrate the proportional reducing valves using the Cat Electronic Technician.
Illustration 9 g06263318
Diagnostic connector for Cat Electronic Technician
(1) Service port
Connect the Cat Electronic Technician to the diagnostic connector located behind the seat on the left side of the cab.
Start Cat Electronic Technician.
Illustration 10 g06246627
Select the ECM for "Implement Control".
Illustration 11 g06246872
Select "Calibrations" from the "Service" menu.
Illustration 12 g06246885
Highlight "PRV - Attachment Valves Pressure Calibration" and click on the "Start" button in the lower left corner of the screen.
Illustration 13 g06246941
Select the attachment valves to calibrate and press the "Begin" button.
Follow the instructions on the screen. Press "Next" button to continue through to the next